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principal quantum number

[ prin-suh-puhl kwon-tuhm nuhm-ber ]

noun

, Physics.
  1. the nonnegative, integral quantum number that defines the stationary orbits in the Bohr model of the atom.

principal quantum number

/ prĭn′sə-pəl /

  1. See under quantum number

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Word History and Origins

Origin of principal quantum number1

First recorded in 1920–25

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